2A533A Vol.2 Part.2 (38-64)
Preperation quiz for comm/nav mission systems journeyman
Questions and Answers
- 1.
Which is not a flight line precaution used to protect electrostatic discharge sensitive components?
- A.
Using protective tote boxes
- B.
Covering line replace unit (lru) connector plugs
- C.
Touching the ends of aircraft wiring to the KRU case prior to installiation
Correct Answer
A. Using protective tote boxesExplanation
Using protective tote boxes is not a flight line precaution used to protect electrostatic discharge sensitive components. Protective tote boxes are typically used to transport and store components, but they do not provide protection against electrostatic discharge. Electrostatic discharge can damage sensitive components, so other precautions such as covering line replace unit (LRU) connector plugs and touching the ends of aircraft wiring to the KRU case prior to installation are necessary to prevent such damage.Rate this question:
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- 2.
When working on electrostatic discharge sensitive devices in the shop area, you must use
- A.
A grounded dline replace unit cable
- B.
Non conductive antistatic mats
- C.
A grounded workbench
Correct Answer
C. A grounded workbenchExplanation
To prevent electrostatic discharge (ESD) from damaging sensitive devices, it is necessary to use a grounded workbench. A grounded workbench helps to dissipate any static electricity that may build up on the surface, preventing it from transferring to the devices being worked on. This ensures that the devices remain protected from ESD and reduces the risk of damage. The other options mentioned, a grounded line replace unit cable and non-conductive antistatic mats, may also be used in ESD-safe environments, but they do not directly address the need for a grounded workbench.Rate this question:
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- 3.
Which action could pose a safety hazard to personnel in an electrostatic discharge protected area?
- A.
Use of certain ionizers
- B.
Wearing of personal clothing
- C.
Improper use of conductive bags
Correct Answer
A. Use of certain ionizersExplanation
The use of certain ionizers could pose a safety hazard to personnel in an electrostatic discharge protected area. Ionizers are devices used to neutralize static charges in the air, but if not properly maintained or used, they can generate high levels of ozone or other harmful gases, which can be hazardous to the health of personnel.Rate this question:
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- 4.
Shielded cable consits of
- A.
A metallic braid over the insulations
- B.
A metal conductor covered with a dielectric
- C.
An inner conductor sepearted by an insulation dielectric
Correct Answer
A. A metallic braid over the insulationsExplanation
Shielded cable consists of a metallic braid over the insulations to provide protection against electromagnetic interference (EMI) and radio frequency interference (RFI). The metallic braid acts as a shield, preventing external signals from interfering with the transmission of signals through the cable. It helps to maintain signal integrity and reduce noise, ensuring reliable and high-quality transmission.Rate this question:
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- 5.
Which type of cable is used to carry radio-fq power form on point to another?
- A.
Insulated wire
- B.
Shielded
- C.
Coaxial
Correct Answer
C. CoaxialExplanation
A coaxial cable is used to carry radio-frequency power from one point to another. It consists of a central conductor surrounded by an insulating layer, a metallic shield, and an outer insulating layer. The shield helps to minimize interference and signal loss, making it suitable for transmitting high-frequency signals such as radio waves. The design of the coaxial cable allows for efficient transmission of power and signals over long distances without significant degradation.Rate this question:
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- 6.
Which is not a type of connector coupling?
- A.
Friction
- B.
Bayonet
- C.
Insertion
Correct Answer
C. InsertionExplanation
The correct answer is "insertion" because friction and bayonet are both types of connector couplings commonly used in various applications. Friction coupling involves the use of frictional forces to secure and connect two components, while bayonet coupling uses a locking mechanism with a series of pins and slots. On the other hand, insertion is not a type of connector coupling as it does not refer to a specific method or mechanism for joining two components together.Rate this question:
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- 7.
What is not a radio-frequency connector precaution?
- A.
Never step on the cable
- B.
Ensure a good grip when using pliers
- C.
Ensure you solder double shielded cables together
Correct Answer
B. Ensure a good grip when using pliersExplanation
The given options are all precautions related to radio-frequency connectors except for ensuring a good grip when using pliers. While stepping on the cable can damage it and soldering double shielded cables together can cause interference, ensuring a good grip when using pliers is not specifically related to radio-frequency connectors. It is a general precaution to prevent accidents and ensure proper handling of tools.Rate this question:
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- 8.
The serial tansmission bit rate for the military standard 1553B data bus is
- A.
1 Mbps
- B.
16 Mbps
- C.
32 Mbps
Correct Answer
A. 1 MbpsExplanation
The correct answer is 1 Mbps because the military standard 1553B data bus has a maximum serial transmission bit rate of 1 Mbps. This means that it can transmit data at a rate of 1 million bits per second.Rate this question:
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- 9.
What is the structure of a military standard 1553B data word?
- A.
20bits long; 3 sync; 16 data/command/status; 1 parity bit
- B.
32bits long; 3 sync; 28 data/command/status; 1 parity bit
- C.
20bits long; 1 sync; 16 data/command/status; 3 parity bit
Correct Answer
A. 20bits long; 3 sync; 16 data/command/status; 1 parity bitExplanation
The structure of a military standard 1553B data word is 20 bits long, with 3 sync bits, 16 bits for data/command/status, and 1 parity bit.Rate this question:
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- 10.
What is not a funciton of the military standard 1553B data bus mode codes?
- A.
Resetting terminals
- B.
Synchronizing the subsystem time
- C.
Executing a bus controller broadcast command
Correct Answer
C. Executing a bus controller broadcast commandExplanation
The military standard 1553B data bus mode codes have various functions, such as resetting terminals and synchronizing the subsystem time. However, executing a bus controller broadcast command is not one of these functions. This command allows the bus controller to send a message to all terminals simultaneously, but it is not a specific function of the 1553B data bus mode codes.Rate this question:
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- 11.
Twisting an optic fiber during instalation or maintenacne results in
- A.
Disturbances in lay uniformity
- B.
Greater elasticity of the glass fibers
- C.
Reduced optical power transmission
Correct Answer
C. Reduced optical power transmissionExplanation
Twisting an optic fiber during installation or maintenance can cause the fiber to become misaligned or damaged. This misalignment or damage can lead to a reduction in the transmission of optical power through the fiber. When the fiber is twisted, the light signals traveling through it can scatter or be blocked, resulting in a decrease in the overall optical power transmitted. Therefore, the correct answer is reduced optical power transmission.Rate this question:
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- 12.
What is used to convert fiber optic light transmissions to electrical signals?
- A.
Detector
- B.
Reciever
- C.
Photodiode
Correct Answer
C. PhotodiodeExplanation
A photodiode is used to convert fiber optic light transmissions to electrical signals. A photodiode is a semiconductor device that generates a current when exposed to light. In the context of fiber optic communication, a photodiode is used at the receiving end to detect the light signals transmitted through the fiber optic cable and convert them into electrical signals that can be further processed and utilized.Rate this question:
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- 13.
Optoelectonic transducers perform what function in a fiber transmission?
- A.
Amplify output circuit signals
- B.
Convert electrical signals to light signals
- C.
Convert optical energy to electrical engery
Correct Answer
C. Convert optical energy to electrical engeryExplanation
Optoelectronic transducers are devices that can convert optical energy into electrical energy. In the context of fiber transmission, these transducers play a crucial role in converting the light signals that travel through the fiber optic cables into electrical signals that can be processed and transmitted further. This conversion allows for the efficient transmission of data over long distances through fiber optic networks.Rate this question:
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- 14.
Utilizing exact dimensions for stripping wire ensures
- A.
Connectors mate properly
- B.
Solder adheres properly
- C.
Proper connection
Correct Answer
C. Proper connectionExplanation
Utilizing exact dimensions for stripping wire ensures a proper connection. When the wire is stripped to the correct dimensions, it allows the connectors to mate properly, ensuring a secure and reliable connection. Additionally, when the wire is stripped correctly, the solder adheres properly, further enhancing the connection. Overall, using precise dimensions for stripping wire is crucial for achieving a proper connection, ensuring optimal performance and functionality.Rate this question:
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- 15.
Flux is designed to
- A.
Ensure electrical conductivity
- B.
Bond the electrical connection
- C.
Prevent oxygen from combining w/ metal
Correct Answer
C. Prevent oxygen from combining w/ metalExplanation
Flux is a substance used in soldering to prevent oxidation of the metal surface being soldered. When metals are exposed to oxygen, they can form oxides which hinder the flow of electricity. By preventing oxygen from combining with the metal, flux ensures that the electrical connection remains clean and conductive. Therefore, the correct answer is "prevent oxygen from combining w/ metal".Rate this question:
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- 16.
Proper care of an eletic soldering iron invalues
- A.
Jerking the iron to remove excess solder
- B.
Tapping the iron or a table to remove excss solder
- C.
Keeping the iron in a proper holder when your not using it
Correct Answer
C. Keeping the iron in a proper holder when your not using itExplanation
Keeping the iron in a proper holder when not in use is the correct answer because it ensures the safety and longevity of the soldering iron. Placing the iron in a holder prevents it from accidentally falling or causing damage to other objects. It also helps to prevent burns or injuries that may occur if the hot iron is left unattended. By keeping the iron in a proper holder, it remains in a stable and secure position, reducing the risk of accidents and maintaining its functionality for future use.Rate this question:
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- 17.
What is the utmost importance in the soldering process?
- A.
Cleanliness
- B.
Strpping the wires
- C.
Connecitng the wires
Correct Answer
A. CleanlinessExplanation
Cleanliness is of utmost importance in the soldering process because any dirt, dust, or other contaminants on the surfaces being soldered can interfere with the proper bonding of the solder. These contaminants can prevent the solder from adhering to the surfaces or cause weak solder joints. Additionally, cleanliness is important to prevent oxidation of the surfaces, which can also hinder the soldering process. Therefore, ensuring that the surfaces are clean and free from any contaminants is crucial for achieving strong and reliable solder connections.Rate this question:
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- 18.
Which is not a type of solderless connector?
- A.
Splice
- B.
Terminal lug
- C.
Connector splice
Correct Answer
C. Connector spliceExplanation
A splice is not a type of solderless connector. Solderless connectors are used to join two or more wires without the need for soldering. Terminal lugs and connector splices are both examples of solderless connectors. A terminal lug is a type of connector that is crimped onto the end of a wire, allowing it to be easily connected to a terminal or stud. A connector splice is a type of connector that is used to join two or more wires together.Rate this question:
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- 19.
What type of solderless connector is used to permit easy and efficient connectios to electrical equipment?
- A.
Splice
- B.
Terminal lug
- C.
Connector splice
Correct Answer
B. Terminal lugExplanation
A terminal lug is a type of solderless connector that is used to allow easy and efficient connections to electrical equipment. It is designed to securely connect wires to terminals or studs, providing a reliable electrical connection. Terminal lugs are commonly used in various applications, such as automotive, industrial, and electrical systems, where a strong and durable connection is required.Rate this question:
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- 20.
One purpose of crimper positioners is to
- A.
Put the pin contacts in the proper position
- B.
Align the crimper handles to the pin contact
- C.
Put the turret head in line with the pin contact
Correct Answer
A. Put the pin contacts in the proper positionExplanation
Crimper positioners are used to put the pin contacts in the proper position. This means that they ensure that the pin contacts are correctly aligned and positioned before the crimping process takes place. By doing so, the crimper positioners help to ensure that the crimped connections are accurate and secure. They play a crucial role in achieving the desired outcome of properly positioned pin contacts, which is essential for the overall functionality and reliability of the electrical connections.Rate this question:
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- 21.
The colored end of an insertion and extration to is used for contact
- A.
Insertion into a rear-release connector plug
- B.
Insertion into a fron-release connector plug
- C.
Extration from a rear-release connector plug
Correct Answer
A. Insertion into a rear-release connector plugExplanation
The colored end of an insertion and extraction tool is used for insertion into a rear-release connector plug.Rate this question:
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- 22.
One way of pressure and moisture sealing the back of a connector is to use
- A.
Silicone tape
- B.
Silicone caulking
- C.
Heat-shrinkable tape
Correct Answer
A. Silicone tapeExplanation
Silicone tape is a suitable option for pressure and moisture sealing the back of a connector. Silicone tape is known for its excellent sealing properties and ability to create a tight and secure seal. It is flexible and can conform to the shape of the connector, ensuring a reliable seal. Additionally, silicone tape is resistant to moisture, heat, and chemicals, making it an ideal choice for protecting the connector from external elements. Therefore, silicone tape is a practical and effective solution for pressure and moisture sealing in this context.Rate this question:
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- 23.
The heat and air pressure required for proper installatio of heat-shrink products is contolled by the
- A.
Tool operator
- B.
Pressure controller
- C.
Air/nitrogen regulator
Correct Answer
A. Tool operatorExplanation
The heat and air pressure required for proper installation of heat-shrink products is controlled by the tool operator. This means that it is the responsibility of the person operating the tool to adjust and regulate the heat and air pressure levels according to the specific requirements of the installation process. The tool operator must have the necessary knowledge and skills to ensure that the heat-shrink products are installed correctly and effectively.Rate this question:
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- 24.
Electromagnetic pulse hardened cable is considered nonreparable by local personnel if it has damage to the
- A.
Broken internal wires
- B.
Damage to the calbe jacket
- C.
Broken wire at the connector
Correct Answer
A. Broken internal wiresExplanation
If an electromagnetic pulse hardened cable has broken internal wires, it is considered nonreparable by local personnel. This is because the internal wires are crucial for the proper functioning of the cable. If they are broken, it can significantly affect the transmission of signals and data through the cable. Repairing or replacing the internal wires is a complex and specialized task that requires specific expertise and equipment. Therefore, local personnel would not be able to repair the cable if it has damage to the internal wires.Rate this question:
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- 25.
To what precaution must you adhere prior to performin a wire repair job?
- A.
Ensure proper lighting
- B.
Invetory require tools
- C.
Read all prcedures in TO 1-1A-14
Correct Answer
C. Read all prcedures in TO 1-1A-14Explanation
Prior to performing a wire repair job, it is important to read all procedures in TO 1-1A-14. This ensures that the technician is aware of the correct steps and guidelines to follow during the repair process. By reading the procedures, the technician can avoid any potential mistakes or errors that may occur during the wire repair job. It also helps in understanding the necessary precautions and safety measures that need to be taken while performing the repair. Overall, reading all procedures in TO 1-1A-14 is crucial for a successful and accurate wire repair job.Rate this question:
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- 26.
What is not considered to be a general precaution when lacing or tying wire groups or bundles?
- A.
Lace or tie bundles tightly engough to prevent slipping
- B.
Tie all wire groups or bundles twelve inches or less apart
- C.
DO NOT USE TIES ON ANY PARTY OF A WIRE GROUP OR BUNDLE LOCATED INSIDE A CONDUIT
Correct Answer
B. Tie all wire groups or bundles twelve inches or less apartExplanation
The correct answer is "tie all wire groups or bundles twelve inches or less apart." This is not considered to be a general precaution when lacing or tying wire groups or bundles. The other options, such as lacing or tying bundles tightly enough to prevent slipping and not using ties on any part of a wire group or bundle located inside a conduit, are considered to be general precautions when lacing or tying wire groups or bundles.Rate this question:
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Current Version
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Mar 20, 2023Quiz Edited by
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Feb 11, 2011Quiz Created by
Init2win
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